Numerical Reasoning questions. Test 03

A can type 10 pages in 5 minutes. B can type 5 pages in 10 minutes. Working together, how many pages can they type in 30 minutes?

A can contains a mixture of two liquids A and B in the ratio 7:5.When 9 litres of mixture are drawn off and the can is filled with B, the ratio of A and B becomes 7:9. How many litres of liquid A was contained by the can initially?

Two trains of equal lengths take 10 seconds and 15 seconds respectively to cross a telegraph post. If the length of each train be 120 metres, in what time will they cross each other travelling in opposite direction?

When you reverse the digits of age of father, you will get the age of son. one year ago the age of father was twice that of son’s age. what are the current ages of father and son?

A man on tour travels first 160 km at 64 km/hr and the next 160 km at 80 km/hr. The average speed for the first 320 km of the tour is

What is the sum of two consecutive even numbers, the difference of whose squares is 84?

Pipe A can fill a tank in 20 minutes and Pipe B in 30 mins and Pipe C can empty the same in 40 mins.If all of them work together, find the time taken to fill the tank?

A is two years older than B who is twice as old as C. If the total of the ages of A, B and C be 27, the how old is B?

Q is as much younger than R as he is older than T. If the sum of the ages of R and T is 50 years, what is the difference between R and Q’s age?

The ratio between the speeds of two trains is 7 : 8. If the second train runs 400 kms in 4 hours, then the speed of the first train is